Mountable electronic device holder



FIG. 1 is a front perspective view of a mountable electronic device holder;

FIG. 2 is a bottom perspective view of the mountable electronic device holder of FIG. 1;

FIG. 3 is a top view of the mountable electronic device holder of FIG. 1;

FIG. 4 is a front view of the mountable electronic device holder of FIG. 1;

FIG. 5 is a bottom view of the mountable electronic device holder of FIG. 1;

FIG. 6 is a rear view of the mountable electronic device holder of FIG. 1;

FIG. 7 is a right side view of the mountable electronic device holder of FIG. 1; and,

FIG. 8 is a left side view of the mountable electronic device holder of FIG. 1.

The broken lines in the drawings depict pails of the mountable electronic device holder that form no part of the claimed design. 

CLAIM The ornamental design for a mountable electronic device holder, as shown and described. 